Rob Keij / LCD_4x20_MCC0G42005A6W

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API Documentation at this revision

Revision 1:3ea320ddd830, committed 2021-04-13

Comitter:
qynx
Date:
Tue Apr 13 13:06:59 2021 +0000
Parent:
0:bf6598759869
Commit message:
Small changes

Changed in this revision

MCC0G42005A6W.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/MCC0G42005A6W.cpp	Mon Dec 07 20:58:00 2020 +0000
+++ b/MCC0G42005A6W.cpp	Tue Apr 13 13:06:59 2021 +0000
@@ -10,12 +10,14 @@
 LCD_COG::LCD_COG( PinName I2C_sda, PinName I2C_scl, const char *init_message ) : i2c_p( new I2C( I2C_sda, I2C_scl ) ), i2c( *i2c_p ), charsInLine( MaxCharsInALine )
 {
     init( init_message );
+    i2c.frequency(50000);
 
 }
 
 LCD_COG::LCD_COG( I2C &i2c_, const char *init_message ) : i2c_p( NULL ), i2c( i2c_ ), charsInLine( MaxCharsInALine )
 {
     init( init_message );
+    i2c.frequency(50000);    
 }
 
 LCD_COG::~LCD_COG()
@@ -52,7 +54,7 @@
 
     for ( unsigned int i = 0; i < sizeof( init_seq0 ); i++ ) {
         lcd_command( init_seq0[ i ] );
-        wait(30e-6);// wait(30e-6);
+        wait(30e-6);// // 30e-6  0.00003 30ns ?  
     }
 
     set_CGRAM( 7, '\x1F' );
@@ -142,7 +144,7 @@
 {
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
     lcd_command( Comm_ClearDisplay );
-    wait( 2e-3 );
+    wait( 2e-3 );  // 2e-3  0.002  2ms
     curs[ 0 ]    = 0;
     curs[ 1 ]    = 0;
     curs[ 2 ]    = 0;